The bridge was named in the honor of King Bhumibol Adulyadej's 60th birthday. The opening date coincided with the king's birthday, with a million people walking over it.[4] It was the first cable-stayed bridge in Thailand[1] and had the second-longest cable-stayed span in the world when it opened in 1987.[5][6]
The original colour scheme, with white pylons and black cables, was replaced with an all yellow scheme representing the king in 2006.[7][8]
A new eight-lane double-pylon cable-stayed bridge paralleling the Rama IX Bridge has been under construction for some time. Part of the Rama III-Dao Khanong-Western Bangkok Outer Ring Road expressway project, it is intended to relieve traffic congestion on the existing single-pylon bridge. The new bridge's official opening will be in early 2024, after which the Rama IX bridge will be closed for an extensive renovation, which includes a sensor system for added safety.[9]
The steel superstructure includes the bridge, rigged mast, and cable. The main span of the bridge, which is stretched between two poles, has a length of 450 meters. The main span is a trapezoid 33 meters wide. The bridge has a walkway along its side. The bridge has two main pylons 3 x 4.50 meters. This serves to hold the tension of the cable and weight into the pylon pier. The 121 – 167 mm diameter cables consist of many small wires wound together. The cables vary in length from 50 to 223 meters can absorb the tension for 1,500–3,000 tons.[10]
Approach viaductsedit
The gradually sloping viaducts on each side of the river are dual-double-T, post-tensioned, concrete structures with thirteen 50-metre double spans on each bank cast in-situ with a steel travelling shutter, up to 40 metres above the ground for sufficient shipping clearance.[4]
The Senior Engineer Peter Hines[11] overcame a major construction problem: On releasing the 950-ton travelling shuttering, the suction of the shutters could pull the new concrete off. I suggested that as we were only carrying the dead load at the time, we should stress the work to about 2/3rds the finally required stress so that the material would not “hog” (rise in the middle) so much – this worked well. After removing the shuttering, we applied the full stress.[4]
rama, bridge, thai, สะพานพระราม, rtgs, saphan, phra, pronounced, pʰāːn, pʰráʔ, rāːm, kâːw, bridge, bangkok, thailand, over, chao, phraya, river, connects, nawa, district, burana, district, part, ruea, khanong, section, chaloem, maha, nakhon, expressway, สะพานพ. Rama IX Bridge Thai saphanphraram 9 RTGS Saphan Phra Ram Kao pronounced sa pʰaːn pʰraʔ raːm kaːw is a bridge in Bangkok Thailand over the Chao Phraya River It connects the Yan Nawa District to Rat Burana District as a part of the Tha Ruea Dao Khanong Section of Chaloem Maha Nakhon Expressway 1 2 3 Rama IX Bridgesaphanphraram 9Coordinates13 40 55 N 100 31 08 E 13 682058 N 100 519001 E 13 682058 100 519001CarriesChaloem Maha Nakhon ExpresswayCrossesChao Phraya RiverLocaleBangkok ThailandCharacteristicsDesigncable stayedTotal length781 20 mWidth33 mHeight87 mLongest span450 mClearance below41 mNo of lanes6HistoryConstruction start1 October 1984Opened5 December 1987LocationThe bridge was named in the honor of King Bhumibol Adulyadej s 60th birthday The opening date coincided with the king s birthday with a million people walking over it 4 It was the first cable stayed bridge in Thailand 1 and had the second longest cable stayed span in the world when it opened in 1987 5 6 The original colour scheme with white pylons and black cables was replaced with an all yellow scheme representing the king in 2006 7 8 A new eight lane double pylon cable stayed bridge paralleling the Rama IX Bridge has been under construction for some time Part of the Rama III Dao Khanong Western Bangkok Outer Ring Road expressway project it is intended to relieve traffic congestion on the existing single pylon bridge The new bridge s official opening will be in early 2024 after which the Rama IX bridge will be closed for an extensive renovation which includes a sensor system for added safety 9 Contents 1 Bridge structure 2 Approach viaducts 3 See also 4 References 5 External linksBridge structure edit nbsp View of Rama IX BridgeThe steel superstructure includes the bridge rigged mast and cable The main span of the bridge which is stretched between two poles has a length of 450 meters The main span is a trapezoid 33 meters wide The bridge has a walkway along its side The bridge has two main pylons 3 x 4 50 meters This serves to hold the tension of the cable and weight into the pylon pier The 121 167 mm diameter cables consist of many small wires wound together The cables vary in length from 50 to 223 meters can absorb the tension for 1 500 3 000 tons 10 Approach viaducts editThe gradually sloping viaducts on each side of the river are dual double T post tensioned concrete structures with thirteen 50 metre double spans on each bank cast in situ with a steel travelling shutter up to 40 metres above the ground for sufficient shipping clearance 4 The Senior Engineer Peter Hines 11 overcame a major construction problem On releasing the 950 ton travelling shuttering the suction of the shutters could pull the new concrete off I suggested that as we were only carrying the dead load at the time we should stress the work to about 2 3rds the finally required stress so that the material would not hog rise in the middle so much this worked well After removing the shuttering we applied the full stress 4 See also editKing Bhumibol AdulyadejReferences edit a b Rama IX Bridge Expressway and Rapid Transit Authority of Thailand Retrieved 1 February 2008 permanent dead link saphanphraram 9 nwtkrrmkxsrangechlimphrachnmkxngolk saphanphraram 9 nwtkrrmkxsrangechlimphrachnmkxngolk riwiwkhxnod khxnodihm banediyw thawnohm thawnehas pi 2560 2017 khxnodepidihm khxnodphrxmxyu khxnod ikl tid rthiffa BTS rthiffaitdin MRT khxnodmuxsxng khxnodihecha sux khaykhxnod echakhxnod tladkhxnod Archived from the original on 4 October 2017 Retrieved 23 May 2020 a b c Beanz means Hines Peter Hines the worldwide civil engineer ISBN 978 1 71 456394 4 pages 17 and 18 Rama IX Bridge 10th Year Inspection amp Evaluation OPAC Consulting Engineers 2001 Retrieved 1 February 2008 kthph ebiyngkarcracrbriewnsaphanphraram 9 thangphiessechlimmhankhr JS100 Post amp Share Strength in yellow The Nation 10 May 2006 Archived from the original on 1 August 2017 Retrieved 1 February 2008 saphanphraram 9 prbphiwthnn wxneliyngesnthangpxngknrthtid 8 January 2014 Wancharoen Supoj 9 March 2023 Chao Phraya Bridge to Open in 2024 The Bangkok Post Retrieved 10 April 2023 Ramkhamhaeng University Library staff 5 November 2008 Rama9 Bridge Ramkhamhaeng University Library Retrieved 20 October 2013 From http www lib ru ac th journal bangkok rama9 html 26 January 2021 obituary and his photo on page 27 of London s Daily Telegraph External links editRama IX Bridge at Structurae Retrieved from https en wikipedia org w index php title Rama IX Bridge amp oldid 1208480659, wikipedia, wiki, book, books, library,
